Revenue Recognition and Accounts Receivable - Additional Information (Detail) $ in Thousands				1 Months Ended	3 Months Ended		9 Months Ended
	Sep. 01, 2022	Oct. 01, 2021	Jan. 01, 2020 USD ($)	Apr. 30, 2020 USD ($)	Sep. 30, 2020 USD ($)	Sep. 30, 2019 USD ($)	Sep. 30, 2020 USD ($)	Sep. 30, 2019 USD ($)	Dec. 31, 2019 USD ($)
Revenue Recognition And Accounts Receivable [Line Items]
Contract liability (Note 11)				$ 13,900			$ 13,851
Net sales					$ 110,985	$ 113,499	288,943	$ 338,461
Other Current Liabilities [Member]
Revenue Recognition And Accounts Receivable [Line Items]
Contract liability (Note 11)							6,900
Other Long-term Liabilities [Member]
Revenue Recognition And Accounts Receivable [Line Items]
Contract liability (Note 11)							6,900
Other Long-Term Assets or Other Current Assets [Member]
Revenue Recognition And Accounts Receivable [Line Items]
Other contract assets					2,300		2,300		$ 3,700
Scenario Forecast [Member]
Revenue Recognition And Accounts Receivable [Line Items]
Medicare recoupment	0.50	0.25
Frequency of recoupment	6 months	11 months
Performance Obligations [Member]
Revenue Recognition And Accounts Receivable [Line Items]
Net sales					$ 0		$ 0
ASU 2016-13 [Member]
Revenue Recognition And Accounts Receivable [Line Items]
Increase (decrease) to allowance for expected credit losses			$ 1,100
Increase (decrease) in deferred income taxes			200
Decrease in retained earnings			$ (900)